diff --git a/idlib/Str.h b/idlib/Str.h
index 3ac1cd6..70e6c9d 100644
--- a/idlib/Str.h
+++ b/idlib/Str.h
@@ -519,6 +519,10 @@ ID_INLINE char &idStr::operator[]( int index ) {
 #pragma GCC diagnostic pop
 
 ID_INLINE void idStr::operator=( const idStr &text ) {
+	if (&text == this) {
+		return;
+	}
+
 	int l;
 
 	l = text.Length();